Wii Preloader high pitched ringing sound. Please Help!!!

Hey guys,

So the preloader was recently installed on my softmodded wii, but every time i turn it on and go to the system menu, every sound is accompanied with a high pitched ringing noise which does not sound good at all. ex: System menu, in game sounds, homebrew channel, sound effects, everything!! Its so annoying! Why did this happen? I have looked everywhere trying to find a solution for this problem but from the things i found, no one really had a clear solution... but ppl did have the same exact problem like me.... This high pitched ringing noise makes playing unplayable.

Is it a corrupt sound file when installing the preloader?? or something similar to that?

Has this happened to any of you guys too? How do I fix this problem?? PLEASE HELP!!!